Data-Driven Assistant Principal Educational Leader

JOY MARSELLA

A S S I S T A N T P R I N C I P A L E D U C A T I O N A L L E A D E R

San Diego, CA 619-***-**** **.*********@*****.*** Professional Summary

Data-driven assistant principal and educational leader with 25 years of experience strengthening instruction, student support, and campus culture to build confident, innovative learners. Designs collaborative, tiered intervention systems—including Response to Intervention (RtI) and PBIS frameworks—that utilize student data, staff development, and family partnerships to drive continuous growth in academic outcomes, attendance, safety, and social-emotional well-being. Administrative & Leadership Experience

Del Sur Elementary School, Poway Unified School District Assistant Principal 08/2024 – Present

Partner closely with the principal to oversee daily school operations, instructional alignment, and safety protocols for a high-performing campus of 850 students and 80+ staff members.

Reengineered the site’s Impact intervention program by initiating data-driven monitoring cycles and targeted goal setting, driving measurable academic growth for 180+ at-risk students.

Lead data analysis and Student Success Strategy meetings with teachers, specialists, and parents to deploy targeted Tier 2 and Tier 3 interventions that close achievement gaps.

Conduct formal and informal classroom learning walks, providing actionable, evidence-based feedback aligned with teaching standards to increase student engagement and objective mastery.

Coordinate CAASPP site administration and serve as 504 Coordinator, overseeing customized plans to ensure legal compliance, equitable access, and a secure testing environment.

Spearheaded chronic absenteeism analysis and launched a tiered attendance intervention system using positive reinforcement and celebrations to increase Average Daily Attendance.

Manage student discipline through restorative practices, behavioral data analysis, and proactive solutions that reduce office referrals.

Orchestrate duty schedules and supervision for 80 staff members to ensure a secure, organized environment during arrival, dismissal, and recess transitions. Santee School District Administrative Intern / Dean of Students (TK–8) 08/2023 – 06/2024

Designed and managed a dynamic PBIS reward system, including a traveling store, to reinforce positive behavioral expectations and increase student agency.

Co-facilitated the Junior Hope Squad, training student leaders in conflict resolution, anti-bullying, and self-advocacy to foster a restorative and inclusive campus culture.

Led the site Attendance Team, using data tracking to identify chronic trends and launch strategic reinforcement initiatives recognizing individual and grade-level growth.

Served as a collaborative decision-maker on the District Safety Committee, School Site Council, and PTSA.

Teaching & Program Experience

Del Mar Union School District Site Support Teacher (K–6) 09/2021 – 06/2023 Applied research-based strategies to support students in Alternative Learning Curriculum classes, resulting in measurable progress toward individualized IEP goals. Collected and analyzed K–2 English Language Learner progress and presented data-backed instructional strategies to administration and staff. Founded the student-centered Green Team, piloting a school-wide waste reduction and recycling program.

Diocese of San Diego Elementary Classroom Teacher (2nd Grade) 08/2019 – 06/2021 Achieved an 88% growth rate in STAR Math and 71% growth in Reading by implementing differentiated teaching strategies and data tracking. Adapted instruction to a hybrid model during the pandemic, using SEL and Growth Mindset frameworks to support resilience and continuity of learning. Additional Career Highlights

Served as Technology Coordinator and Technology Team Chair, authored a successful multimedia grant, and collaborated with the Board to create a five-year technology strategic plan.

Selected for the Superintendent’s Advisory Committee to assist in implementing the district’s strategic plan at Quaker Hill Elementary, Waterford School District Credentials & Education

Clear Administrative Services Credential – Expected July 2026 National University

Preliminary Administrative Services Credential National University

Professional Clear Multiple Subject Credential University of California at Los Angeles (UCLA)

Master of Science in Educational Administration National University

Master of Education (M.Ed.) University of California at Los Angeles (UCLA)

Bachelor of Arts, Liberal Studies University of California at Santa Barbara (UCSB) Professional Learning, Training & Leadership

National Center for Urban School Transformation (NCUST): SDSU Program Graduate May 2026

Restorative Practices for Administrators: Applied Workshop Training

Instructional Learning Walks: Essential Elements of Instruction and Objective-Driven Planning

PBIS Certification

CPI (Crisis Prevention Institute) and ProACT Certified

Phi Delta Kappa: Leadership Academy

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